man IptablesDlfConverter (3): convert netfilter/iptables syslog logs to firewall DLF

DESCRIPTION

IptablesDlfConverter converts Linux 2.4 iptables packet log into firewall DLF format.

LIMITATIONS

The netfilter logging modules don't log the status of the packet (drop, accept, reject) like the ipchains logging code. You can specify a prefix that will be used in the log. This converter will mark the packet as 'denied' whenever that prefix matches (case insensitive) the following regex: 'denied|deny|drop|reject|unallowed', it will mark the packet as 'permitted' whenever that prefix matches (case insensitive) the following regex: 'accept|permit', and all other packets will have '-' as the value of the 'action' field.

So in order for this converter to detect 'denied' packets, you should use a prefix containing one of those substrings.

For example:

 iptables -N lodrop
 iptables -A logdrop -j LOG --log-prefix "Packet-DENY: "
 iptables -A logdrop -j DROP

or other similar prefixes: 'denied: ', 'Packet-REJECT: ', ...

The prefix used will end up in the 'rule' field of the DLF record.

EXAMPLES

IptablesDlfConvertor will be rarely used on its own, but is more likely called by lr_log2report:

 $ lr_log2report iptables < /var/log/iptables.log > report

AUTHORS

Francis J. Lacoste <[email protected]>

VERSION

$Id: IptablesDlfConverter.pm,v 1.12 2006/07/23 13:16:35 vanbaal Exp $

COPYRIGHT

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.